Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham hu cua snippets" » "pham huu cua snippets", "pham huy cua snippets", "pham thu cua snippets", "pham tu cua snippets", "pham vu cua snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("pham hu cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pham hu cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham hu cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham hu cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.